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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Chemical and radiological sample results

MS0600007 , City of Marks

38 of the 72 analytes this system has been tested for have been detected at least once, across 258 samples on record.

The other 34 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.

Across all 258 samples on record, detections range from October 20, 2003 to July 2, 2025. These figures cover the whole record.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

What has been detected, ever

Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.

Every analyte ever detected for City of Marks, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 168 of 168 results Aug 7, 2007 Jul 2, 2025
Lead 1030 Inorganic Chemical 94 of 169 results Aug 7, 2007 Jul 2, 2025
Barium 1010 Inorganic Chemical 10 of 10 results Oct 20, 2003 Apr 14, 2025
Fluoride 1025 Inorganic Chemical 10 of 12 results Oct 20, 2003 Apr 14, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 9 of 21 results Jun 7, 2004 Mar 21, 2012
Nitrate 1040 Inorganic Chemical 9 of 21 results Jun 7, 2004 Mar 21, 2012
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 18 results Sep 4, 2007 Aug 23, 2023
TTHM 2950 Organic Chemical 7 of 18 results Sep 4, 2007 Aug 23, 2023
Chromium 1020 Inorganic Chemical 6 of 10 results Apr 11, 2005 Apr 14, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Jul 19, 2012
Sodium 1052 Inorganic Chemical 4 of 4 results May 20, 2010 Dec 13, 2023
Nickel 1036 Inorganic Chemical 3 of 10 results Apr 11, 2005 Apr 14, 2025
Sulfate 1055 Inorganic Chemical 3 of 3 results Oct 20, 2003 May 20, 2010
Dichloroacetic Acid 2451 Organic Chemical 2 of 12 results Sep 6, 2013 Dec 7, 2016
Chloroform 2941 Organic Chemical 2 of 13 results Sep 5, 2013 Dec 7, 2016
Calcium 1016 Inorganic Chemical 2 of 2 results May 20, 2010 May 20, 2010
Chloride 1017 Inorganic Chemical 2 of 2 results May 20, 2010 May 20, 2010
Iron 1028 Inorganic Chemical 2 of 2 results May 20, 2010 May 20, 2010
Magnesium 1031 Inorganic Chemical 2 of 2 results May 20, 2010 May 20, 2010
Residue, Total, Filterable 1057 Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Carbon Dioxide 1901 Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Hardness, Total (As Caco3) 1915 Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Alkalinity, Total 1927 Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Calculated Sodium NACA Water Quality 2 of 2 results May 20, 2010 May 20, 2010
PH, Field Result PHFD Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Nitrite 1041 Inorganic Chemical 1 of 21 results Oct 13, 2021 Oct 13, 2021
Monochloroacetic Acid 2450 Organic Chemical 1 of 12 results Sep 6, 2013 Sep 6, 2013
Trichloroacetic Acid 2452 Organic Chemical 1 of 12 results Sep 6, 2013 Sep 6, 2013
Monobromoacetic Acid 2453 Organic Chemical 1 of 12 results Sep 6, 2013 Sep 6, 2013
Bromodichloromethane 2943 Organic Chemical 1 of 13 results Sep 5, 2013 Sep 5, 2013
Manganese 1032 Inorganic Chemical 1 of 1 result May 20, 2010 May 20, 2010
Potassium 1042 Inorganic Chemical 1 of 1 result May 20, 2010 May 20, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result May 20, 2010 May 20, 2010
Color 1905 Water Quality 1 of 1 result May 20, 2010 May 20, 2010
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result May 20, 2010 May 20, 2010
Cadmium 1015 Inorganic Chemical 1 of 10 results Apr 11, 2005 Apr 11, 2005
Selenium 1045 Inorganic Chemical 1 of 10 results Apr 11, 2005 Apr 11, 2005
Dichloromethane 2964 Organic Chemical 1 of 7 results Aug 23, 2004 Aug 23, 2004

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 191–200 of 258 samples, newest first — collected April 23, 2012 to December 12, 2013. The summary above covers all 258.

40 results from the 10 samples listed here: 15 detected, 25 not detected. Across the whole record it is 372 of 874. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for City of Marks, every result from 191 to 200 of 258 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Dec 12, 2013 01:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
131213-006CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Dec 12, 2013 01:00, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
Sep 6, 2013 02:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
130906-018HA
Laboratory
MSDH Lab
0.002 mg/l , sample collected Sep 6, 2013 02:00, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.014 mg/l , sample collected Sep 6, 2013 02:00, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.013 mg/l , sample collected Sep 6, 2013 02:00, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
0.004 mg/l , sample collected Sep 6, 2013 02:00, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 6, 2013 02:00, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.033 mg/l , sample collected Sep 6, 2013 02:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2011 – Dec 31, 2013
Collected
Sep 5, 2013 02:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
130906-017TH
Laboratory
MSDH Lab
21.1 ug/l , sample collected Sep 5, 2013 02:00, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 5, 2013 02:00, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
4.04 ug/l , sample collected Sep 5, 2013 02:00, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 5, 2013 02:00, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
25.1 ug/l , sample collected Sep 5, 2013 02:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2013
Collected
May 22, 2013 09:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
130523-037IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 09:00, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0339 mg/l , sample collected May 22, 2013 09:00, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 09:00, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0009 mg/l , sample collected May 22, 2013 09:00, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.826 mg/l , sample collected May 22, 2013 09:00, sampling point TF080 Fluoride 1025 EPA method 300.0 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 09:00, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0052 mg/l , sample collected May 22, 2013 09:00, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 22, 2013 09:00, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 09:00, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 09:00, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 09:00, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Mar 13, 2013 04:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
130314-086NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 13, 2013 04:00, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 13, 2013 04:00, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 13, 2013 04:00, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Collected
Jul 19, 2012 01:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
201210310532
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Jul 19, 2012 01:00, sampling point TF080 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.409 pci/l Minimum Reporting Level , sample collected Jul 19, 2012 01:00, sampling point TF080 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.409 pci/l Minimum Reporting Level , sample collected Jul 19, 2012 01:00, sampling point TF080 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Jul 19, 2012 01:00, sampling point TF080 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 17, 2012 12:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
120719-009
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Jul 17, 2012 12:00, sampling point TF080 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.409 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 12:00, sampling point TF080 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.409 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 12:00, sampling point TF080 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 12:00, sampling point TF080 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 17, 2012 12:03
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
120719-009RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2012 12:03, sampling point TF080 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
Apr 23, 2012 14:10
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
120424-068
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Apr 23, 2012 14:10, sampling point TF080 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.409 pci/l Minimum Reporting Level , sample collected Apr 23, 2012 14:10, sampling point TF080 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.409 pci/l Minimum Reporting Level , sample collected Apr 23, 2012 14:10, sampling point TF080 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Apr 23, 2012 14:10, sampling point TF080 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 23, 2012 14:17
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
120424-068RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 23, 2012 14:17, sampling point TF080 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012

Routine (10).